<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/img/logo.png" alt="" class="img" />
        <span>好又多</span>
      </div>
      <div class="tongzhi" @click="notice">
        <img
          src="../assets/img/tongzhi.png"
          alt=""
          style="width:24px; height:24px;"
        />
      </div>
      <el-button type="info" @click="logout" size="small" class="exit">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">
          |||
        </div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>

    <!-- 通知的对话框 -->
    <el-dialog title="系统通知" :visible.sync="noticeDialogVisible" width="30%">
      <el-timeline>
        <el-timeline-item timestamp="2021/6/2" placement="top">
          <el-card>
            <h4>增加了首页可视化面板，一页掌控所有数据</h4>
            <p>小何 提交于 2021/6/2 10:20</p>
          </el-card>
        </el-timeline-item>
        <el-timeline-item timestamp="2021/5/22" placement="top">
          <el-card>
            <h4>增加了商品分类-编辑功能</h4>
            <p>小何 提交于 2021/5/22 13:40</p>
          </el-card>
        </el-timeline-item>
        <el-timeline-item timestamp="2021/5/1" placement="top">
          <el-card>
            <h4>好又多管理系统1.0版本上线了！！</h4>
            <p>小何 提交于 2021/5/1 19:46</p>
          </el-card>
        </el-timeline-item>
      </el-timeline>
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="noticeDialogVisible = false"
          >我知道了</el-button
        >
      </span>
    </el-dialog>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        "125": "el-icon-user-solid",
        "103": "el-icon-s-grid",
        "101": "el-icon-shopping-bag-2",
        "102": "el-icon-document",
        "145": "el-icon-s-data"
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: "",
      // 通知的对话框显示与隐藏
      noticeDialogVisible: false
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("activePath");
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      // console.log(res);
    },
    // 点击按钮，切换菜单的折叠和展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem("activePath", activePath);
      this.activePath = activePath;
    },
    notice() {
      this.noticeDialogVisible = true;
    }
  }
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 12px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2rem;
  cursor: pointer;
}
.img {
  margin-left: 10px;
}
.tongzhi {
  position: relative;
  left: 835px;
}
.tongzhi:hover {
  -webkit-animation: bounce 1s 0.1s ease both;
  -moz-animation: bounce 1s 0.1s ease both;
}
@-webkit-keyframes bounce {
  0% {
    -webkit-transform: scale(1);
  }
  10%,
  20% {
    -webkit-transform: scale(0.8) rotate(-2deg);
  }
  30%,
  50%,
  70%,
  90% {
    -webkit-transform: scale(1.1) rotate(2deg);
  }
  40%,
  60%,
  80% {
    -webkit-transform: scale(1.1) rotate(-2deg);
  }
  100% {
    -webkit-transform: scale(1) rotate(0);
  }
}
.exit{
  margin-right: 10px;
}
</style>
